A better nanochannel tungsten film in releasing helium atoms

doi:10.1016/j.jnucmat.2020.152044

	A better nanochannel tungsten film in releasing helium atoms
	Wei, Guo 4,5; Li, Jingwen 1; Li, Yonggang 2; Deng, Huiqiu 3; Jiang, Changzhong 4,5; Ren, Feng 4,5
刊名	JOURNAL OF NUCLEAR MATERIALS
	2020-04-15
卷号	532
ISSN号	0022-3115
DOI	10.1016/j.jnucmat.2020.152044
通讯作者	Ren, Feng(fren@whu.edu.cn)
英文摘要	Discovering highly radiation resistant plasma facing materials (PFM) is an urgent target for nuclear fusion reactor. In our previous work, a new PFM (nanochannel tungsten film) that consists of many tungsten crystal columns was found having excellent radiation tolerant properties. In the present work, three tungsten columns whose top surfaces are {100}, {110} and {111}-oriented were studied by molecular dynamics simulations and density functional theory calculations. We find that the tungsten columns whose top surfaces are {100}-oriented retain fewer helium atoms than the tungsten columns whose top surfaces are {110} or {111}-oriented. Moreover, the microstructural changes of tungsten columns whose top surfaces are {100}-oriented are smaller than others after high helium fluence exposure, which indicates that the nanochannel tungsten film maybe more suitable than bulk tungsten for plasma facing material in releasing helium atoms and delaying the formation of "fuzz" structure. The results reported here can help us to design a better radiation resistant plasma facing material in the future. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Science Fund for Excellent Young Scholars[11522543] ; Natural Science Foundation of China[11935011] ; Natural Science Foundation of China[11875207] ; Natural Science Foundation of China[11475129] ; Natural Science Foundation of Hubei Province, China[2016CFA080] ; Fundamental Research Funds for the Central Universities
WOS关键词	TOTAL-ENERGY CALCULATIONS ; DYNAMICS
WOS研究方向	Materials Science ; Nuclear Science & Technology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000523636000012
资助机构	National Science Fund for Excellent Young Scholars ; Natural Science Foundation of China ; Natural Science Foundation of Hubei Province, China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103681]
专题	中国科学院合肥物质科学研究院
通讯作者	Ren, Feng
作者单位	1.Henan Univ, Sch Phys & Elect, Inst Computat Mat Sci, Kaifeng 475004, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Hunan Univ, Sch Phys & Elect, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China 4.Wuhan Univ, Ctr Ion Beam Applicat, Sch Phys & Technol, Wuhan 430072, Peoples R China 5.Wuhan Univ, Hubei Nucl Solid Phys Key Lab, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Wei, Guo,Li, Jingwen,Li, Yonggang,et al. A better nanochannel tungsten film in releasing helium atoms[J]. JOURNAL OF NUCLEAR MATERIALS,2020,532.
APA	Wei, Guo,Li, Jingwen,Li, Yonggang,Deng, Huiqiu,Jiang, Changzhong,&Ren, Feng.(2020).A better nanochannel tungsten film in releasing helium atoms.JOURNAL OF NUCLEAR MATERIALS,532.
MLA	Wei, Guo,et al."A better nanochannel tungsten film in releasing helium atoms".JOURNAL OF NUCLEAR MATERIALS 532(2020).